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Finding the Fourth Proportional to 77,405.40, 116,021.70 and 44,141.40

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Solution

The fourth proportional to 77,405.40, 116,021.70 and 44,141.40 is: 66,162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.40 : 116,021.70 = 44,141.40 : x
  2. Step 2: Convert to fraction form
    77,405.40/116,021.70 = 44,141.40/x
  3. Step 3: Cross multiply
    77,405.40x = 116,021.70 × 44,141.40
  4. Step 4: Simplify right side
    77,405.40x = 5,121,360,268.38
  5. Step 5: Solve for x
    x = 5,121,360,268.38/77,405.40
  6. Step 6: Final answer
    x = 66,162.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.